How far is Knox, IL from Des Plaines, IL?
The driving distance from Knox, IL to Des Plaines, IL is about 201.4 miles (324.1 km), with a travel time of about 03h 06m by car.
- The straight-line flight distance is about 144.3 miles (232.3 km).
- For a round trip, plan for roughly 06h 13m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 AM CDT.
Reverse, save, or send this route
This drive is better planned with a longer stop or an overnight stay. Copy the route link, send it to another device, or print a clean version before you head out.
This drive is better planned with a longer stop or an overnight stay.
Flight Distance
Driving Distance
Gas Cost Calculator
Leave and Arrive Planner
Pick a departure time to see your estimated arrival and same-day return window.
Drive time stays fixed at 03h 06m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
City and county seat of Lee County, Illinois, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny then Slight Chance Showers And Thunderstorms
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Knox and Des Plaines.
Turn-by-Turn Driving Directions
Step-by-step road directions between Knox and Des Plaines.
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1
Start on Knox Station Road
45 m · 10 sec · Knox Station Road
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2
Turn left onto Mine Road
2682 ft · 2 min · Mine Road
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3
Turn right onto Knox Road 1020 E
1.4 mi · 5 min · Knox Road 1020 E
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4
Take the ramp right toward I 74 West: Galesburg
1921 ft · 47 sec
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5
Merge slight left
39.3 mi · 42 min
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6
Keep slight left to continue on Chicago-Kansas City Expressway
6.3 mi · 7 min · Chicago-Kansas City Expressway
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7
Take the exit slight right toward I 88 East, IL 92 East: Sterling, Rock Falls
135 mi · 2 hr 29 min
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8
Keep slight right to continue on Ronald Reagan Memorial Tollway
4.7 mi · 6 min · Ronald Reagan Memorial Tollway
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9
Take the exit slight right toward I 294 North, I 290 West: Milwaukee, Rockford
3128 ft · 1 min
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10
Keep slight left to continue on I 294 Toll North: O'Hare International Airport, Milwaukee
1156 ft · 28 sec
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11
Merge slight left onto Tri-State Tollway
9.9 mi · 13 min · Tri-State Tollway
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12
Take the exit slight right toward Touhy Avenue
635 ft · 16 sec
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13
Keep slight left to continue on Touhy Avenue
2694 ft · 1 min
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14
Keep slight left to continue on Touhy Avenue West
688 ft · 17 sec
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15
Keep slight right to continue on Touhy Avenue West
1799 ft · 44 sec
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16
Turn straight onto East Touhy Avenue
99 m · 7 sec · East Touhy Avenue
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17
Turn slight right
103 m · 9 sec
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18
Turn right onto South Des Plaines River Road
1.7 mi · 3 min · South Des Plaines River Road
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19
Turn left onto Henry Avenue
557 ft · 24 sec · Henry Avenue
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20
Arrive at your destination
0 m · 1 sec · Henry Avenue
Car Route Details
A richer read on the saved driving route between Knox and Des Plaines.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
I 88 East
Take the exit slight right toward I 88 East, IL 92 East: Sterling, Rock Falls
135 mi · 02h 29m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A longer out-and-back drive
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
Mostly Sunny then Slight Chance Showers And Thunderstorms leaving Knox and Mostly Sunny near Des Plaines.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Knox to Des Plaines?
The road trip is about 201.4 miles (324.1 km) and usually takes 03h 06m in normal driving conditions.
Is this a same-day trip or an overnight route?
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
What is the halfway point on this route?
Dixon is a useful midpoint, sitting about 100.6 miles from Knox and 100.8 miles from Des Plaines.
How much longer is the road route than the straight-line distance?
The direct path is about 144.3 miles (232.3 km), while the road route adds roughly 57.1 extra miles because roads do not follow the straight air line.
When is the best time to leave for this route?
A good departure window is usually 6:00 AM to 8:00 AM CDT. If you want a more comfortable same-day return, try to leave by 10:46 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $26.81 one way or $53.62 round trip. Estimated CO2 is about 63.2 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny then Slight Chance Showers And Thunderstorms around Knox and Mostly Sunny near Des Plaines.
Stop Ideas Near Dixon
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Dixon.
Mendota station
Princeton
Rockford, Illinois
Kewanee
Flight Path Map
This map shows the direct air route between Knox and Des Plaines. Straight-line distance: 144.33 mi (232.28 km).
#1 Knox
County seat of Knox County, Tennessee, United States; third-largest city in Tennessee
| Population | 2,692 |
| Coordinates | 40.9342000, -90.2548500 |
| Altitude | 201 |
| Country | United States |
#2 Des Plaines
The most populous city in Cook County, Illinois.
| Population | 58,179 |
| Coordinates | 42.0333600, -87.8834000 |
| Altitude | 193 |
| Country | United States |
End: Henry Avenue (-87.883408, 42.033456)
Estimated Travel Time
Distance: 324 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 06h 42m |
| 40 mph (64.37 km/h) | 05h 02m |
| 50 mph (80.47 km/h) | 04h 01m |
| 60 mph (96.56 km/h) | 03h 21m |
| 70 mph (112.65 km/h) | 02h 52m |
| 80 mph (129 km/h) | 02h 30m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $26.81 | $53.62 |
| Mid-grade | $4.25 | $30.24 | $60.48 |
| Premium | $4.65 | $33.09 | $66.18 |
| Diesel | $5.30 | $37.71 | $75.42 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
Prices in Illinois · Apr 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.